Answer:
Step-by-step explanation:
21 feet below is written as -21
9 feet up is written as +9
So we have -21 + 9 = -12 or 12 feet below sea level
Answer:
222222222/1000000000
Step-by-step explanation:
If i mean .913 then .91 but if u wrote it correctly then 900
Answer:
the answer is y=2x+8
Step-by-step explanation:
Add all the sides then divide by how many sides it is
